@article{PismaZhETF.41.466,
    title = {Low-temperature anomaly of the velocity of ultrasound in $Pb_{0.75}Sn_{0.25}Te(In)$},
    author = {Vasil'ev, A. N. and Gaidukov, Yu. P. and Nikiforov, V. N.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {41},
    issue = {11},
    pages = {466},
    year = {1985},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22402.shtml},
}